au_ga

au_ga_README.txt

The files in this section result from the conversion of datasets originating from Geoscience Australia

Australia: AUSGeoid98: GDA94 -> AHD height

Source: Geoscience Australia
Format: GeoTIFF converted from GTX
License: Creative Commons Attribution 4.0
Converter: gdal_translate -of GTX AUSGeoid98.gsb AUSGeoid98.gtx -b 1

• au_ga_AUSGeoid98.tif

Australia: AUSGeoid09: GDA94 -> AHD height

Source: Geoscience Australia
Format: GeoTIFF converted from GTX
License: Creative Commons Attribution 4.0
Converter: gdal_translate -of GTX AUSGeoid09_V1.01.gsb AUSGeoid09_V1.01.gtx -b 1

Uses AusGeoid09 model which uses bi-cubic interpolation; bi-linear interpolation of the grid file will give results agreeing to within 1cm 99.97% of the time.

• au_ga_AUSGeoid09_V1.01.tif

Australia: AUSGeoid2020: GDA2020 -> AHD height

Source: Geoscience Australia
Format: GeoTIFF converted from GTX
License: Creative Commons Attribution 4.0
Converter: gdal_translate AUSGeoid2020_20180201.gsb tmp.tif -a_nodata -999 -b 1 && gdalwarp tmp.tif AUSGeoid2020_20180201.gtx -dstnodata -88.8888015747070312 -of GTX

Uses AusGeoid2020 model.

• au_ga_AUSGeoid2020_20180201.tif

Australia: AGQG (version 20191107): GDA2020 -> AVWS height

Removed: in PROJ-data v1.7 (use v1.6 to get it). Superseded by au_ga_AGQG_20201120.tif

Source: Geoscience Australia
Format: GeoTIFF converted from source GeoTIFF
License: Creative Commons Attribution 4.0

• au_ga_AGQG_20191107.tif

Australia: AGQG (version 20201120): GDA2020 -> AVWS height

Source: Geoscience Australia
Format: GeoTIFF converted from source GeoTIFF
License: Creative Commons Attribution 4.0

• au_ga_AGQG_20201120.tif